#overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
  background-color: rgba(0,0,0,.7);
}

.dots-container,
.dots-text-container {
  position: absolute;
  top: 50%;
  left: 50%;
  -webkit-transform: translateX(-50%) translateY(-50%);
  transform: translateX(-50%) translateY(-50%);
}
.dots-text-container {
  top: 45%;
}
.dots-text {
  color: #fff;
}
.dot {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 5px;
  float: left;
  margin-right: 20px;
}

.dot1 {
  background: #9963ff;
}

.dot2 {
  background: #f6f1ff;
}

.dot3 {
  background: #b996fc;
}

.dot4 {
  background: #5000be;
}